Buderus Logano G234X Installation And Maintenance Instructions Manual
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Buderus Logano G234X Installation And Maintenance Instructions Manual

Gas-fired boiler
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Installation and Maintenance
Instructions
Logano G234X
gas-fired boiler
Gas-fired boiler
WARNING
!
Before commissioning the boiler, heed the safety
instructions for mounting and maintenance.
DANGER!
If installation, adjustment, modification, operation
or maintenance of the heating system is carried
out by an unqualified person, this may result in
danger to life and limb or property damage. The
installation and servicing instructions must be
followed precisely. If you require assistance or
further information, contact a qualified installer or
an appropriate service provider.
CAUTION!
The operating instructions are part of the techni-
cal documents that must be handed over to the
operator of the heating system. Discuss the in-
struction in this manual with the owner or opera-
tor of the heating system to ensure that they are
familiar with all information required for operation
of the heating system.
For heating contractors
Please read carefully before
installing and servicing.

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Summary of Contents for Buderus Logano G234X

  • Page 1 For heating contractors Please read carefully before Logano G234X installing and servicing. gas-fired boiler...

  • Page 2: Table Of Contents

    ..... .30 2.8.1 Logano G234X dimensions ... . 7 6.4.2 Placing heating system with...

  • Page 3: Explanation Of Symbols And Safety Information

    B The boiler must not be operated until the obstruction has been removed. B Inform the system user in writing of the problem and associated danger. Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 4 B Take measures to ensure that the heating system cannot be switched on again unintentionally. Danger due to short-circuits To prevent short circuits, only B use genuine Buderus wiring. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 5: Product Description

    The relevant authorities and regulatory bodies must be informed before installation starts. Where required by local regulations, the system must comply with the American Society of Mechanical Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 6: Tools, Materials And Equipment

    Technical documentation Foil package Tab. 2 Package Contents All accessories can be ordered optionally from Buderus: • Logamatic 2000 control unit • Heating pump • Cleaning brush Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 7: Dimensions And Specifications

    Product description Dimensions and specifications 2.8.1 Logano G234X dimensions Fig. 2 Connections and dimensions for Logano G234X, dimensions in mm (dimensions in inches) VK/VS Boiler supply/Storage tank supply Gas connection + main isolating valve Boiler return RSL/EL Return safety line/draining...

  • Page 8: Specifications

    [In. W.C.] [mbar] 2.20 10.6 26.5 2.40 10.5 26.2 2.30 10.3 25.8 2.45 10.3 25.9 Tab. 5 Main gas orifice identification and rated orifice pressure for propane gas Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 9: Moving The Boiler

    B Position transport equipment (e.g. trolley) at the back of the boiler. B Secure packaged boiler to the hand truck. B Move the packaged boiler to the installation location. Fig. 4 Moving boiler with trolley Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 10: Placing The Boiler

    B Do not store or use these substances in the boiler room. B Avoid excessive dust accumulation (building dust). Fig. 6 Wall clearances in the boiler room Closed door Open door Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 11: Leveling The Boiler

    NOTICE: Risk of system damage due to contamination! B Protect boiler connections from damage and dirt if the boiler is not to be installed immediately. Fig. 7 Leveling the boiler (example) Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 12: Installing The Boiler

    B Attach the gas connection pipe shifted by 180° and seal. B Carry out the leak test. Fig. 8 Low-water cut-off Boiler Panel radiator Heating system with low-water cut-off Heating system without low-water cut-off Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 13: Connect The Central Heating Supply And

    Supply connection debris on the water side. Safety valve Supply manifold pipe (factory-installed) 90°-elbow (¾ " NPT) Observe the local regulations for connection of boiler systems. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 14: Electrical Connection

    B Mount a power switch near the boiler. Fig. 11 Remove the rear boiler cover. Rear boiler cover O F F 7 747 010 720-80.1RS Fig. 10 Main power switch Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 15 B Mount the temperature/pressure gauge [1] on the supply pipe [2] and seal. Fig. 15 Removing the temperature/pressure gauge temperature/pressure gauge Fig. 13 Fastening the control unit supply pipe Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 16 Logamatic 2000 control unit. Fig. 18 Installing strain relief Fig. 17 Sensor well and temperature sensor Sensor well Plastic coil Compensator spring Capillary line Sensor retaining clip Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 17: Installing The Rear Boiler Cover

    NOTICE: Risk of system damage due to contamination! B Protect boiler connections from damage and dirt if the boiler is not to be installed immediately. Fig. 20 Positioning the cover Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 18: Connecting The Gas Supply

    B The gas pipes must be fastened outside the boiler. Fig. 22 Gas valve pipe connection Gas supply Shut-off Sediment trap Retaining screws at the gas feed line (on site) Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 19 (in inches) Type of pipe fitting 90° elbow T-piece Shut-off valve Gas shut-off valve 1.60 1¼ 2.15 1½ 2.50 3.00 2½ 3.50 Tab. 8 Equivalent lengths for pipe fittings Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 20: Converting Boiler To Propane

    If the gas supply pipe system is pressure tested at a test pressure of 0.5 psi (34.5 mbar) or less, it is sufficient to disconnect the boiler from the pipe system by closing the stop valve. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 21: Filling The Heating System And Checking For Water Leaks

    B Install the safety valve in accordance with accordance with the local regulations. the requirements of the ANSI/ASME Boiler and Pressure Vessel Code, Section B Observe the local regulations for connection of boiler systems. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 22: Install Front Wall Of Boiler

    Supply connection Safety valve Supply manifold pipe (factory-installed) Fig. 25 Install front wall of boiler 90°-elbow (¾ " NPT) Appliance insignia plate Front wall of boiler Locking screws Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 23: Connecting The Flue

    • If the openings are connected to ventilation ducts, the ducts must have the same cross-section area as the openings. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 24: Requirements For Connection To Chimneys Or Venting Systems

    If an existing boiler is separated from a common flue system, the dimensioning of this flue system will be too big. A proper venting for the remaining heating systems is then no longer guaranteed. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 25: Installing The Flue Pipe

    B Connect flue pipe to the chimney with the shortest Fig. 26 Installation of vent damper possible length of flue pipe. Vent Damper Motor Adapter for the flue outlet Draft hood Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 26: Installing Electrical Connection Of Vent

    Regulations require the complete flue system to be checked at least once a year by a qualified technician after installation and initial operation. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 27: Commissioning The Heating System

    4. Unscrew left and right screws in the side panels, lift front panel up, pull outward and remove to the front. Fig. 28 Remove front wall of boiler Locking screws Boiler casing Front wall of boiler Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 28 Install pressure measuring nipple and attach a pressure gauge. Fig. 29 Gas valve ON/OFF button (at ON position) Screw plug for gas connection pressure test port Screw plug for nozzle pressure test port Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 29: Start-Up Instructions

    B From outside the building, call the gas utility company and approved heating contractor. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 30: Making Boiler Ready For Operation

    Fig. 30 Switching on heating system (with aquastat) Main power switch Fig. 31 Turning on heating system (with Logamatic 2000 control unit) Mode selection switch Main power switch Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 31: Then Carry Out Start-Up Procedures

    For Logamatic 2000 control units, continue with steps 5 and 6. 10.9 10.3 25.9 Then repeat steps 7 to 10 regardless of the control Tab. 11 Nozzle pressure unit in use. Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 32 1 1/2 inches (15 to 40 mm). If this is the case continue with step 20. Fig. 36 Main burner Main burner flame Fig. 35 Correct pilot flame setting 1/2 to 1 1/2 Inch (12.7 to 38.1 mm) Pilot flame Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 33 2000 control unit is reached. Record the result in the commissioning log ( page 35). Only for the Logamatic 2000 control unit Select operating mode AUT (automatic mode) with the mode selection switch. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 34: Shutting Off Gas Supply To Boiler

    B Hang front wall of boiler [3] from above, fold down and screw in securing screws [1] into the front cover below. Fig. 39 Install front wall of boiler Locking screws Boiler casing Front wall of boiler Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 35: Commissioning Log

    3.70 3.70 3.50 3.80 Only convert natural 2.20 2.40 2.30 2.45 Tab. 12 Main gas orifice identification 1) factory setting 2) to propane gas according to conversion instructions Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 36: Shut Down The Heating System

    With Logamatic 2000 control unit or the appropriate circuit breaker. B Switch off the on/off switch ("0" position). This switches off the boiler and all its components (e.g. burner). Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 37: Heating System Inspection And Maintenance

    The results of the inspection must be recorded in the maintenance log ( page 44). Spare parts can be ordered from Buderus using the parts list. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 38: Preparing Boiler For Cleaning

    If you smell gas, STOP! Check that the gas shut-off is closed. Repeat the odor test. If you do not smell gas, go to the next step. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 39: Cleaning The Boiler

    Keep the gasket in a safe place. B Label wires of flame roll out switch [4] and disconnect Fig. 45 Removing the burner from the switch [5]. Fixing nuts Studs with spacers Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 40: Wet Cleaning (Chemical Cleaning)

    B Ventilate boiler room well again. B Install or clean the burner ( page 41). B Screw cleaning cover into place and replace insulation. B Install boiler cover. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 41: Cleaning The Burner

    B Complete the maintenance log to confirm that all maintenance work has been carried out ( page 44). Sign the maintenance protocol and discuss it with the owner of the heating system. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 42: Troubleshooting

    If gas valve closes, check thermostat and connection line again. If the gas valve does not close, replace gas valve. End of troubleshooting Repeat procedure until heating system operates correctly. Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 43 Ignition flame fault Main gas valve closes. Ignition module starts ignition attempt. Specified thermostat value (control) reached Close main and pilot gas valve. Gas burners go out. Vent damper closes. Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 44: Maintenance Log Book

    Check maximum aquastat setting page 33 Check of the boiler area for flammable materials, gasoline page 41 or other corrosive liquids Confirmation of properly completed servicing: Company stamp/signature: Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 45 Measurement value:____ Measurement value:____ Unit_____ Unit_____ Unit_____ Unit_____ Unit_____ Unit_____ Measurement value:____ Measurement value:____ Measurement value:____ Measurement value:____ Measurement value:____ Measurement value:____ Unit_____ Unit_____ Unit_____ Unit_____ Unit_____ Unit_____ Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 46: Spare Parts

    9199 9199 9198 9197 "Buderus" sign 6790 2840 Top front cover 5024- Top rear cover 5024- Mounting kit no. 1 5015 951 Tab. 13 Individual parts boiler casing Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 47 Spare parts Fig. 50 Boiler casing Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 48 6302 0956 Sealant rope GP 8x3000 6302 0958 Sealant rope GP 6x10000 5822 706 Buderus sealant - 3055 6301 4362 Tab. 14 Individual parts of boiler heat exchanger Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 49 5621 819 Reducer DIN 2950 241 3869 828 1“ x 3/4“ Pipe extension DIN 2950 526 320 840 3/4“ x 80 Tab. 14 Individual parts of boiler heat exchanger Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 50 Spare parts Fig. 51 Boiler heat exchanger Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 51 4 Burner control unit 7747 007 839 Aquastat 5996 360 Cable assembly 7079 804 Mounting kit no. 4 7079 764 Tab. 15 Individual parts control unit GAW025 US Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 52 Spare parts Fig. 52 Control unit GAW025 US Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 53 Flame escape switch 171°F (77 °C) 5176 272 Screw M4x16 ST Installation material no. 5 Mounting kit no. 5 5181 883 Tab. 16 Individual parts of gas distributor Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 54 Spare parts Fig. 53 Gas distributor Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 55 Burner AE234X "US" replacement 5181- NG Kit G234X 0 - 2000 ft "US" 5993- LP Kit G234X 0 - 2000 ft "US" 5993- Tab. 17 Individual parts gas type conversion parts Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 56 Spare parts Fig. 54 Burner models, gas type conversion parts AE234X US Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 57 Gas valve 5181 870 WARNING: Do not use the screw fitting included with the gas fitting for the pilot gas pipe! Tab. 18 Gas fitting VR8304H4206 ¾ 24V 60Hz Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 58 Spare parts Fig. 55 Gas fitting VR8304H4206 ¾ 24V 60Hz Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 59 Screw fitting for pilot gas pipe 5181 672 Ignition burner holder Installation material no. 5 Screw M5x12 A3K Installation material no. 5 Pilot gas pipe 5181 670 Tab. 19 Pilot burner for G234X Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 60 Spare parts Fig. 56 Pilot burner for G234X Logano G234X - Technical specifications are subject to change without prior notice.

  • Page 61: 10 Circuit Diagrams

    Circuit diagrams 10 Circuit diagrams Fig. 57 Circuit diagram 1 Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 62 Circuit diagrams Fig. 58 Circuit diagram 2 Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 63 Notes Logano G234X - Technical specifications are subject to change without prior notice.
  • Page 64 United States and Canada Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-584-1681 www.buderus.us U.S.A. Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30-32 D-35576 Wetzlar www.buderus.com Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing...

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